noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   any oxide containing five oxygen atoms in each molecule
2. 2
   an oxide containing five atoms of oxygen in the molecule wordnet

Etymology

From penta- + oxide.

Related phrases

antimonic pentoxideantimony pentoxidearsenic pentoxidebismuth pentoxidedinitrogen pentoxidediphosphorus pentoxidenitrogen pentoxidephosphorus pentoxidevanadium pentoxide

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.